The Shijiazhuang concrete crack enhance the material production of polypropylene fiber helps to absorb the impact resistance and toughness of concrete to improve the Shijiazhuang concrete crack enhance the material production of polypropylene fiber concrete structures affected by the impact kinetic energy, and the effect of crack resistance due to fiber concrete members subjected to impact loading, the fiber can block the rapid expansion of the internal cracks, and therefore can effectively enhance the impact resistance and toughness of concrete. The Shijiazhuang concrete cracking is to enhance the production of polypropylene fibers improved the durability of concrete: Shijiazhuang concrete crack enhanced polypropylene fiber of the material produced by the good crack resistance, and thus greatly reduce crack occurrence and development, reduction of the internal porosity , making the water in the external environment corrosive and chemical media, chloride and other erosion and infiltration mitigation, that is, provided by the crack destructive, corrosive role of gradual infiltration and expansion of channels, due to a significant reduction of the crack become negligible, hazards reduce the structural reinforcement corrosion, thus greatly improve and enhance the durability of concrete. The Shijiazhuang concrete cracking enhance the material production of polypropylene fibers to improve the fire resistance of concrete: the concrete, especially high-strength concrete mixed with polypropylene fiber, which can effectively improve the concrete's fire resistance and fire safety. High-strength concrete has a fairly dense, high-pressure steam to the formation of free water inside the concrete and the decomposition of chemical water heated in the flame is difficult to escape, often lead to the sudden burst and collapse of the concrete structures, cause serious harm. The Shijiazhuang concrete cracking to enhance the material production of fiber reinforced concrete, three-dimensional network structure due to the formation of a large number of uniformly distributed polypropylene monofilament fiber, when the internal temperature of the concrete structures of the flame broiled to rise to more than 165 ℃, the fibers melt, the formation of internal connected Road channel for strong high-pressure steam to escape from the concrete, so we can avoid the burst in the fire environment.